Backend Developer Redis In-Memory Database BNSP Sertifikasi Profesi Caching Session Storage Message Broker Pub/Sub Key-Value Store Data Structures Strings Lists Sets Hashes Sorted Sets TTL Expiration Persistence RDB AOF Replication Clustering High Availability Fault Tolerance Performance Optimization Latency Reduction Database Caching Query Caching Page Caching Session Management Shopping Cart Real-time Features Leaderboard Rate Limiting Throttling Queue System Background Jobs Task Queue Priority Queue Redis Streams Consumer Groups Blocking Operations Lua Scripting Redis Security ACL Encryption Monitoring Redis CLI RedisInsight Grafana Prometheus Logging Redis Clients Python Node.js Java PHP Redis Cluster Sharding Load Balancing Scalability Memory Management Data Eviction LRU LFU Redis Best Practices Redis Use Cases Caching Strategies Cache Invalidation Cache Warming Cache Coherence